HP IO Accelerator for BladeSystem c-Class Performance Tuning Bedienungsanleitung PDF herunterladen (Seite 15)

Debugging performance issues 15

to avoid this issue. For more information, see the patch

(http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b90f687018e6d6 ) and

bug report (https://bugzilla.kernel.org/show_bug.cgi?id=15579).

The fix is included in RHEL6 pre-release kernel kernel-2.6.32-23.el6. The eventual release RHEL6 kernel is not

affected by this issue.

Discard support was added to the kernel.org mainline ext4 in Version 2.6.28 and was enabled by default.

For fear of damaging some devices, discard was set to default to disabled in Version 2.6.33-rc1 and was

back ported to 2.6.31.8 and 2.6.32.1. For more information, see the kernel patch

(http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5328e635315734d).

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HP IO Accelerator for BladeSystem c-Class Performance Tuning Bedienungsanleitung Seite 15